Improvement in the manufacture of paper



waited gnaw fitted @llll JOHN S. KENYONAND LEWISFOX, OF BALDWINSVILLE,YORK.

Letters Patent No. 108,913, dated November 1, 1870.

IMPROVEMENT IN THE MANUFACTURE OF PAPER.

The Schedule referred to in these Letters Patent and making part of thenine.

into the :engines (the tubs when the stock is ground to' pulp) duringthe time theyare reducing the stock to pulp,'in as great a quantity asthe. stoekor pulp will absorb or take upsay about two hundred pounds ofthe red-rock to four hundred pounds of stock, not confining ourselves,however, to this proportion.

The advantages derived from the use of the red-rock in the manufactureof paper, are- The color which it gives to the. paper, the increase ofsolidity, firmness, weight, and'good appearance.

'(flaim.

We claim as our invention-- The mineral substance called red-rock instock or pulp in the manufacture of paper, substantially as and vfor thepurposes herein set forth.

JOHN s. KENYON. LEWIS FOX.

Witnesses BRADFORD MILLER, ARTHUR T. ,Onvrs.

